package com.example.demo;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;


@EnableConfigurationProperties(CustomProperties.class)
public class Lab2AutoConfig {

    @Bean
    @ConditionalOnProperty(prefix = "hzy.auto", name = "enable", havingValue = "true")
    CommandLineRunner createCustomCommandLineRunner(Environment env){
        return new CustomCommandLineRunner(env);
    }

    @Bean
    public ApplicationListener<ApplicationEvent> Listener(){

        return new ApplicationListener<ApplicationEvent>() {
            @Override
            public void onApplicationEvent(ApplicationEvent event) {
                System.out.println("自定义 ApplicationReadyEvent 事件监听器");
            }
        };
    }

    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
    ApplicationEventMulticaster customApplicationEventMulticaster(ThreadPoolTaskExecutor taskExecutor){
        SimpleApplicationEventMulticaster eventMulticaster =new SimpleApplicationEventMulticaster();
        eventMulticaster.setTaskExecutor(taskExecutor);
        return eventMulticaster;
    }

    static class NoticeEvent extends ApplicationEvent{
        private static final Logger logger = LoggerFactory.getLogger(NoticeEvent.class);

        private final String message;
        public NoticeEvent(String message){
            super((message));
            this.message = message;
            logger.info("添加事件成功！message: {}", message);
        }

        public String getMessage() { return  message;}
    }

    @Component
    static class NoticeListener implements ApplicationListener<NoticeEvent>{

        private static final Logger logger =LoggerFactory.getLogger(NoticeListener.class);

        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent){
            logger.info("事件监听器获取到 NoticeEvent,睡眠当前线程 2 秒...");
            try{
                Thread.sleep(2000);
            }catch(InterruptedException e){
                e.printStackTrace();
            }
            logger.info("Notice 的 message 属性是 : {}", noticeEvent.getMessage());
        }
    }

}
